Rostislavna Mstislavna of Smolensk was born circa 1202 to Mstislav Mstivlavich Udatnyi of Novgorod (c1170-1228) and Maria of Cumania (c1185-c1260) and died 4 May 1344 Veliky Novgorod, Novgorod Oblast, Russia of unspecified causes. She married Yaroslav II Vsevolodovich of Vladimir (1191-1246) 1218 JL .
Rostislava (baptized Feodosya) Mstislavna is the holy Grand Princess of Vladimir, the mother of Prince Aleksandr Nevsky (1220-1263), presumably the daughter of the Galician prince Mstislav Udalogo, the second wife of the Grand Prince of Vladimir-Suzdal Yaroslav Vsevolodovich of Chernigov (1139-1198), from whom she gave birth to the 9th (according to other sources - 7 or 8- х) sons and 2 daughters. Memory on the day of death May 5 (May 18 ), 3rd week of Pentecost ( Cathedral of the Novgorod Saints ), June 23 (July 6 o.s.) (Cathedral of the Vladimir Saints).
She died in Novgorod, taking monasticism under the name of Euphrosinia, according to some sources, on May 5, 1244, on the other - on May 4, 1241. Two of her tombs are also indicated: one in the St. George's Monastery in Novgorod and the other in the St. George Church in Vladimir.